646 EXPERIMENT STATION BEOORD. [Vol. 36 



& Sons, 1916, vol. 1, pp. XII +^0, figa. 115; vol. 2, 2. ed., pp. U7, fiffS- 656).— 

 These volumes form a part of the agricultural series prepared under the direc- 

 tion of G. Wery. The first treats of nonparasitic diseases, or those the causes 

 of which are not definitely known. It also contains chapters on parasitism, 

 symbiosis, immunity, etc. 



The second volume describes and discusses bacterial and fungus diseases, as 

 well as the injuries and abnormalities produced by Cuscuta, mistletoe, etc. The 

 earlier edition of the second volume has already been noted (E. S. R., 21, 

 p. 146). 



Report of the botanist and plant pathologist, H. W. Babbb (South Carolina 

 Sta. Rpt. 1916, pp. 16-20). — The lines of investigation reported upon are essen- 

 tially the same as those previously noted (E. S. R., 34, p. 643). 



In the study of cotton anthracnose, methods of securing disease-free seed 

 have been given attention, field selections, hot water treatments, and field tests 

 with old seed having been made. By careful selection, removal of diseased 

 bolls before picking, and the treatment of seed from disease-free stalks with 

 sulphuric acid before planting, it has been found possible to eliminate anthrac- 

 nose, even from some of the badly diseased varieties. Further tests of old 

 seed kept in the office and laboratories show that three-year-old seed gives 

 disease-free plants. Seed claimed by farmers to have been kept for three years 

 In sheds and barns did not give as satisfactory results as were obtained at 

 the station. Further spraying tests with Bordeaux mixture gave results 

 similar to those reported previously. 



The excessive rains during July seriously interfered with the work on the 

 investigation of cotton shedding, but It was found that excessive soil moisture 

 during the blooming season caused as much shedding and as great injury to 

 plants as do long periods of drought. During the past year soil temperatures 

 have been taken, and records of temperatures from different depths are avail- 

 able in connection with other physiological data. 



The investigation of the angular leaf spot of cotton has been continued 

 along the same lines as indicated In Bulletin 184 of the station (E. S. R., 35, 

 p. 652), and considerable data secured with reference to the occurrence of the 

 disease, its abundance and spread, methods of dissemination and infection, 

 conditions under which Infection takes place, etc. 



Brief notes are given of preliminary work on the breeding of cotton, re- 

 forestation of the coastal plain, and cooperative exi)eriments with this Depart- 

 ment In the production of cotton and cowpeas resistant to wilt and root knot. 

 Report of the mycological department of the entomological station in Tula 

 for 1913-14, N. P. Tbusova {Abs. in Mat. Mikol. i Fitopatol. Ross., 1 {1915), 

 No. 4, pp. 122, 123). — The author gives a list of fungus diseases observed in 

 Province Tula, Russia, in 1913-14, and points out the influence of meteoro- 

 logical conditions on their development. This was especially remarkable in 

 case of the late blight of potatoes, which was very severe In 1913 and practi- 

 cally absent In 1914. Of particular Interest Is the statement that soda gave 

 satisfactory results In combating the American gooseberry mildew. 



Fungus parasites in Province Voronezh collected in the summer of 1912, 

 A. BoNDARTSEv (BoNDARZEw) and L. Debedeva (Abs. in Mat. Mikol. i Fitopatol. 

 Ross., 1 (1915), No. 4, p. 124). — In connection with descriptions of a number 

 of parasites collected by the authors In the summer of 1912, particular interest 

 Is said to attach to the finding of Peronospora polygoni on buckwheat, as this 

 may be identical with Peronospora sp. found on the same host in France. 

 Many new species are added to the class of imperfect fungi, some of which are 

 illustrated and described. 



